When I install this on my site, there is a problem. Everything goes well until I try to make the "Super User." I enter a name and pass for the new admin profile and then hit Submit. Then it gives me a 404 Error like this:

Not Found
The requested URL /php-nuke/admin.php.php was not found on this server.

Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.

Is it SUPPOSED to me going to "/php-nuke/admin.php.php" or is that a mess up in the scripting? If it is a mess up, how do I fix it and if it is supposed to go to that filename, then where is it?